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Fix mcxn build by providing the RNG for TZ_PSA builds #785

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Merged
danielinux merged 1 commit into from
May 26, 2026
+21 −1
Merged

Fix mcxn build by providing the RNG for TZ_PSA builds #785

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4 changes: 3 additions & 1 deletion test-app/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,9 @@ TARGET?=none
ARCH?=ARM
MCUXPRESSO_CMSIS?=$(MCUXPRESSO)/CMSIS
ifneq (,$(filter $(TARGET),mcxa mcxw mcxn))
TEST_APP_NO_RNG?=1
ifneq ($(WOLFCRYPT_TZ_PSA),1)
TEST_APP_NO_RNG?=1
endif
endif
ifeq ($(TZEN),1)
# wcs directory contains a user_settings.h, which will conflict with
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18 changes: 18 additions & 0 deletions test-app/wcs/user_settings.h
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Expand Up @@ -166,6 +166,24 @@ static inline int wcs_cmse_get_random(unsigned char* output, int sz)
#define CUSTOM_RAND_GENERATE_BLOCK wcs_cmse_get_random
#endif

#ifdef WOLFCRYPT_TZ_PSA

extern int hal_trng_get_entropy(unsigned char *out, unsigned int len);

static inline int wcs_psa_rand_block(unsigned char *output, int sz)
{
if (sz <= 0 || output == (unsigned char*)0)
return -1;

if (hal_trng_get_entropy(output, (unsigned int)sz) != 0)
return -1;

return 0;
}
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#define CUSTOM_RAND_GENERATE_BLOCK wcs_psa_rand_block
#endif

/* Disable VLAs */
#define WOLFSSL_SP_NO_DYN_STACK

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